Environmental Remediation Potential of Ferrous Sulfate Waste as an Eco-Friendly Coagulant for the Removal of NH3-N and COD from the Rubber Processing Effluent
| Autor: | Md. Sohrab Hossain, Rahmat Ngteni, Adel Al-Gheethi, Harlina Ahmad, Mu. Naushad, Sadanand Pandey, Fatehah Mohd Omar, Muhammad Khalish Mohammad Ilias |
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| Rok vydání: | 2021 |
| Předmět: |
FeSO4·7H2O waste
Central composite design Chemistry Environmental remediation Health Toxicology and Mutagenesis Chemical oxygen demand Public Health Environmental and Occupational Health Pulp and paper industry industrial effluent rubber processing effluent coagulation eco-friendly coagulant Ferrous Medicine Coagulation (water treatment) Response surface methodology Ammoniacal nitrogen Effluent |
| Zdroj: | International Journal of Environmental Research and Public Health; Volume 18; Issue 23; Pages: 12427 International Journal of Environmental Research and Public Health, Vol 18, Iss 12427, p 12427 (2021) |
| ISSN: | 1660-4601 |
| DOI: | 10.3390/ijerph182312427 |
| Popis: | The present study was conducted to determine the potential of utilizing the FeSO4·7H2O waste from the titanium manufacturing industry as an effective coagulant for treating industrial effluent. In this study, the secondary rubber processing effluent (SRPE) was treated using ferrous sulfate (FeSO4·7H2O) waste from the titanium oxide manufacturing industry. The FeSO4·7H2O waste coagulation efficiency was evaluated on the elimination of ammoniacal nitrogen (NH3-N) and chemical oxygen demand (COD) from SRPE. The central composite design (CCD) of experiments was employed to design the coagulation experiments with varying coagulation time, coagulant doses, and temperature. The coagulation experiments were optimized on the optimal elimination of NH3-N and COD using response surface methodology (RSM). Results showed that coagulant doses and temperature significantly influenced NH3-N and COD elimination from SRPE. The highest NH3-N and COD removal obtained were 98.19% and 93.86%, respectively, at the optimized coagulation experimental conditions of coagulation time 70 min, coagulant doses 900 mg/L, and temperature 62 °C. The residual NH3-N and COD in treated SPRE were found below the specified industrial effluent discharge limits set by DoE, Malaysia. Additionally, the sludge generated after coagulation of SRPE contains essential plant nutrients. The present study’s finding showed that FeSO4·7H2O waste generated as an industrial byproduct in a titanium oxide manufacturing industry could be utilized as an eco-friendly coagulant in treating industrial effluent. |
| Databáze: | OpenAIRE |
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